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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 발행연도
- 2014
- 저작권
- 경상대학교 논문은 저작권에 의해 보호받습니다.
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The purpose of this study is to clarify the petrogenesis of the dioritic rocks from the Hadong area in the southeastern Yeongnam massif. The dioritic rocks are distributed in from Agyang-myeong Dongmae-ri and Bukcheon-myeon Jikjeon-ri, Sapyeong-ri area. The modal compositions of dioritic rocks are granodiorite, quartz monzonite, quartz monzodiorite, monzodiorite, and diorite.
The whole-rock magnetic susceptibility values represent that the dioritic rocks in the area are magnetite-series, indicating that magma was solidified under relatively oxidation environment.
The dioritic rocks reveal continuous variation trend of major element oxide contents with SiO2. Major element oxide content variation trends are fairly similar of the dioritic rocks. Thus the dioritic rocks in the Hadong area were solidified from the magmas of homogeneous origin. The AFM diagram shows calc-alkaline series. And ANK/ACNK variation diagram shows metaluminous, I-type of the dioritic rock in the study area. Accordingly the tectonic environment of the dioritic rocks in the study area seems to have been continental margin.
Results of the zircon U-Pb age dating show that zircons from Agyang-myeon dioritic rock age of 229.3±1.9 Ma (n=14, MSWD=1.20), and zircons from Bukcheon-myeon dioritic rock age of 227.3±1.9 Ma (n=14, MSWD=0.61). Thus the dioritic rocks in the study area are Triassic intrusions.
Combining with previously reported results, Triassic granitic rock were intruded into the Sangju, Hamyang, Macheon, Sancheong, and Daegang areas in the Yeongnam massif. It indicates that there were a number of igneous activities in the Yeongnam massif during the Triassic period.
The whole-rock magnetic susceptibility values represent that the dioritic rocks in the area are magnetite-series, indicating that magma was solidified under relatively oxidation environment.
The dioritic rocks reveal continuous variation trend of major element oxide contents with SiO2. Major element oxide content variation trends are fairly similar of the dioritic rocks. Thus the dioritic rocks in the Hadong area were solidified from the magmas of homogeneous origin. The AFM diagram shows calc-alkaline series. And ANK/ACNK variation diagram shows metaluminous, I-type of the dioritic rock in the study area. Accordingly the tectonic environment of the dioritic rocks in the study area seems to have been continental margin.
Results of the zircon U-Pb age dating show that zircons from Agyang-myeon dioritic rock age of 229.3±1.9 Ma (n=14, MSWD=1.20), and zircons from Bukcheon-myeon dioritic rock age of 227.3±1.9 Ma (n=14, MSWD=0.61). Thus the dioritic rocks in the study area are Triassic intrusions.
Combining with previously reported results, Triassic granitic rock were intruded into the Sangju, Hamyang, Macheon, Sancheong, and Daegang areas in the Yeongnam massif. It indicates that there were a number of igneous activities in the Yeongnam massif during the Triassic period.
목차
감사의 글 ⅳ목 차 ⅵList of Tables ⅶList of Figures ⅷABSTRACT ⅹⅠ. 서론 1Ⅱ. 지질 개요 3Ⅲ. 섬록암류에 대한 암석기재 61. 악양면 섬록암류 62. 북천면 섬록암류 9Ⅳ. 섬록암류에 대한 전암 대자율 측정결과 191. 전암 대자율 및 측정방법 192. 전암 대자율 측정결과 20Ⅴ. 섬록암류의 화학조성 221. 주성분원소분석방법 222. 주성분원소분석결과 22Ⅵ. U-Pb 저콘 연대 251. 연대측정 및 분석방법 252. 연대측정 결과 26Ⅶ. 고찰 311. 섬록암류에 대한 암석학적 고찰 312. 영남육괴에 분포하는 관입암체와의 연대 비교 32Ⅷ. 결론 34참 고 문 헌 35
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